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Amazon’s Third-Party Sellers Hit By Hackers

Fraud stems largely from email, password credentials stolen from hacked accounts, sold on the ‘dark web’

Amazon third-party sellers, which account for more than half of the company's sales, have been hit repeatedly by hackers who post fake deals on legitimate sellers' pages. WSJ's Laura Stevens explains the impact on consumers on Lunch Break with Tanya Rivero. Photo: Reuters

Hackers are targeting the growing population of third-party sellers on Amazon.com Inc., using stolen credentials to post fake deals and steal cash.

In recent weeks, attackers have changed the bank-deposit information on Amazon accounts of active sellers to steal tens of thousands of dollars from each, according to several sellers and advisers. Attackers also have hacked into the Amazon accounts of sellers who haven’t used them recently to post nonexistent merchandise for sale at steep discounts in an attempt to pocket the...